Radio map log



Nov. 14, 1933. E E ELLIOTT 1,934,683

RADIO MAP LOG Filed Dec. 16, 1952 3 Sheets-Sheet l l Z ZE'lmZZ Zinnentor Bu I r I attorneys E. E. ELLIOTT Nov. 14, 1933.

RADIO MAP LOG 3 Sheets-Sheet 2 Filed Dec. 16, 2

l Enventor E. E. ELLIOTT Nov. 14, 1933.

RADIO MAP LOG Filed Dec. 16, 1932 3 Sheets-Sheet 3 Imventor Gttornegs Patented Nov. 14, 1933 UNITED STATES RADIO MAP LOG Edgar Ewene Elliott, Little Rock, Ark.

Application December 16, 1932 Serial No. 647,685

2 Claims.

This invention relates to radio receiving sets, the primary object of the invention being to provide a dial-log in the form of a map, to the end that the operator may readily determine the cations and kilocycles of stations, insuring accuracy and selectivity in tuning in radio stations, and eliminating the necessity of referring to the usual log sheets.

A further object of the invention is the provision'of a device of this character which may be readily and easily installed, without the necessity of making extensive alterations in the usual radio panel or receiving set.

A still further object of the invention is to provide a radio login the form of a map which may be provided with openings located and formed by the operator, so that the log will be constructed for use with a particular radio receiving set.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a front elevational View of a radio receiving set panel, equipped with a log con- 'structed in accordance with theinvention.

Figure 2 is a fragmental rear elevational view thereof.

Figure 3 is a vertical sectional view through the panel.

Figure 4 is a rear elevational view of the panel and radio log, after the log has been perforated, to, indicate broadcasting stations.

Figure 5 is a rear elevational view illustrating a modified form of the invention.

Figure 6 is a rear elevational view of a further modified form of the invention.

Figure 7 is a vertical sectional view through the structure shown by Figure 6 of the drawings.

Referring to the drawings in detail, the .reference character 5 designates the front panel of a 50 radio receiving set, which isformed with an opening indicated at 6. Secured to the rear surface of the panel, and covering the opening 6, is a length of thin sheet metal material indicated at 7 drilled with openings 8. Secured on the sheet metal plate 7, and formed with openings, is a sheet of flexible material having lines thereon indicating ,a map, which in the present showing represents the United States, the lower part of Canada, the upper part of Mexico, and the West Indies, however it is to be understood that the flexible sheet may be provided with lines indicating a map of any desired country. 5

On positioning this flexible sheet carrying th map, the map is positioned so that the indicia thereon indicating the principal cities, or broadcasting stations, will fall opposite to certain holes of the sheet metal plate 7, for purposes to be hereinafter more fully described.

A suitable piercing pin not shown, is now passed through the flexible sheet and through the openings of the sheet metal material, piercing the flexible sheet, with the result that openings are.

formed directly opposite to the indicia indicating the names of cities or broadcasting stations. The reference character 9 designates a housing that'is positioned on the rear surface of the panel 5 at a point to surround the inner portion of the opening 6.

Operating within the housing is a plate 10 formed with a central opening, which is covered by a sheet of heavy paper material indicated by the reference character 11. Openings are formed in the upper and lower ends of the housing 9, and accommodate the side rods 12 'ofthe movable frame, that supports the plate 10, the rods being of lengths to extend appreciable distances above and below the plate 10 as clearly shown by the drawings. 7 The upper and lower ends of the side rods 12 are connected by-the rods 13, which rods engage the end walls of the housing 9, providing a stop, to limit the movement of the frame and plate.

Connected to the lower-end rod 13, is a cord 14 that extends through an opening in the lower end wall of the housing 9, and connects with the coiled spring 15, that has its upper end secured to the upper end wall of the housing. Thus it will be seen that due'to this construc tion, the frame'and sheet of heavy paper material, are normally urged upwardly. The reference character 16 indicates the radio tuning dial shaft which is provided with a pulley 16 on which the flexible member 17 is wound, the flexible member 17 being connected with the lower rod 13, so that movement of the shaft 16 to wind the flexible member 17 thereon, will act to draw the frame and sheet 11, downwardly.

It will of course be understood that the shaft 16 controls the condenser of the radio set in the usual manner, and that upon moving the shaft 16, various stations may be tuned in by the set.

Thus it'will be seen that upon building up the log, the shaft '16 is rotated until a broadcasting station has been accurately tuned in. A piercing instrument is now passed through the opening on the map, where the particular stationtuned in, is located, thereby piercing the sheet of heavy paper material 11, the opening formed thereby being in direct registration with the opening of the map, and metal plate 7. This operation is of course duplicated, in locating various stations, and the sheet 11 is perforated to correspond with the openings of the member '7.

The housing 9 is closed by means of the hinged closure 18, which is provided with a housing 19 in which the lamp 20 is located, the lamp 20 being in circuit with a source of electricity supply,

through the wires 21.

As clearly shown by Figure 3 of the drawings, the front wall of the lamp housing 19, is cut away and covered by the sheet of translucentmaterial 22, which is preferably colored red.

When the closure 18 is in its closed position,

the translucent sheet 22 will lie in close proX-- imity to the sheet 11, with the result that light rays will be projected through the sheet 22 and registering openings of the sheet 11 and sheet '7, indicating to the operator, that the variable condenser of the radio set has been moved to tune in a predetermined station.

In the modified form of the invention as shown by Figure 5 of the drawings the opening of the receiving set panel which is covered by a metallic sheet carrying a map, is perforated at certain points indicating locations of cities, is indicated by the reference character 25. Supported on the panel, by means of the shaft 26, is a disk 27, which is constructed of suitable sheet material which may be readily pierced by a suitable piercing instrument.

In this form of the invention the condenser Shaft 28 of the radio set, supports a pulley 29, over which the belt 30 operates, the belt 30 also passing over the pulley 31, mounted on the shaft 26.

As the knob on the shaft 28 is rotated in the usual manner to tune in stations, the disk 27 is rotated, with the result that the openings 32 of the disk will fall opposite the openings in the plate covering the opening 25.

Light will shine through the registering openings as previously described, indicating that the shaft 27 has been moved to tune in a predetermined station.

As shown by Figure 6 of the drawings, a still further modified form of the invention is illustrated', and in this form of the invention the metallic plate which is supplied with a map, and perforated in a way to indicatecities or broadcasting stations, is indicated by. the reference character 35, and is provided with upstanding flanges 36 formed with elongated openings 37. Teeth 38 are formed on the metallic plate, near the ends thereof, which teeth cooperate with teeth 39 carried by the cylinder 40.

Shafts 41 extend from the cylinder 40, and operate in the elongated openings 3'7, with the result that the cylinder may move over the entire rear surface of the plate 35.

The cylinder 40 is constructed of material that may be readily pierced by a pin or the like, with the result that openings formed in the cylinder 40 may be brought into registry with the opening of the plate 35.

A lamp 42 is positioned within the cylinder 40, and is in circuit with a suitable source of electricity supply through the wires 43, with the result that light rays will be projected through the registering openings of the plate 35 and cylinder 40.

' The condenser shaft is indicated by the reference character 44 and carries a pulley 45 that turns therewith.

The flexible members 46 operate over the pulley 45, and move over the pulleys 47 and 48 respectively, the flexible members 46being connected with the collars 49 that are positioned on the shafts 41.

Coiled springs 50 are also connected with the collars 49, the coiled springs being anchored to the rear surface of the panel, so that they normally urge the cylinder 40 in one direction against the action of the flexible member 46.

As the shaft 44 is rotated in one direction, the cylinder 40 will be moved vertically, and rotated, bringing openings thereof into registry with openings of the plate 35.

From the foregoing it will be obvious that due to this construction, a person may build-up a logwhich will accurately locate cities, or broadcasting stations.

Having thus described the invention what is claimed is:

l. The combination with a radio receiving set panel having a sight opening, and condenser shaft thereof, of a radio dial comprising a plate secured to the panel and having openings arranged therein to be viewed through the sight opening, a housing secured to the rear surface of the panel and surrounding the opening, a rectangular wire frame including side rods extending through the end walls of. the housing, a plate having a central opening, secured to the wire frame, a sheet of heavy paper material covering the opening in the last mentioned plate, the sheet of heavy paper having openings registering with the openings of the first mentioned plate, a flexible member secured to the wire frame and wound on the condenser shaft to move the frame when the condenser shaft is rotated, a lamp housing within the receiving set and having a front wall formed of colored translucent material, and a lamp in the lamp housing directing light rays through the front wall of the lamp housing and through the aligning openings of the first mentioned plate and sheet of heavy paper, indicating a predetermined position of the condenser shaft.

2. The combination with a radio receiving set panel having a sight opening and condenser shaft thereof, of a radio dial comprising a metallic plate securedto the panel and having openings arranged therein, said plate covering the sight opening, a housing surrounding the plate and sight opening, the housing being secured to the rear of the panel, a wire frame movable through the housing, a covering for the frame, said frame and covering moving adjacent to the plate and having openings adapted to register with the openings of the plate, a housing within the first mentioned housing and having a colored translucent wall, disposed adjacent to the sight opening, a lamp within the last mentioned housing for projecting light rays through the colored translucent wall and registering openings of the plate and covering of the wire frame, and a cord connected with the frame and wound on the V 

